C#

private void txtClientCode_Validated(object sender, EventArgs e)
{
    int rowIndex = -1;
 
    if(!int.TryParse(txtClientCode.Text, out rowIndex))
        return;  // Number cannot be parsed - maybe you could use Validating event instead
 
    DisplayClientInfo(rowIndex);
}
 
private void DisplayClientInfo(int rowIndex)
{
    DataRow row = m_dtClientInfo.Rows[rowIndex];
 
    txtFirstName.Text = (string)row["FirstName"];
    // Fill the rest of the fields here
}

private void txtClientCode_Validated(object sender, EventArgs e)
{
    try
    {
        OleDbDataAdapter l_daCCSearch = new OleDbDataAdapter(
            "SELECT * from ClientFile WHERE ClientCode = '" + txtClientCode.Text + "'", m_connection);
        DataTable l_dtCCSearch = new DataTable();
        l_daCCSearch.Fill(l_dtCCSearch);
        txtClientCode.Text = l_dtCCSearch.Rows[0]["ClientCode"].ToString();
        txtAdress.Text = l_dtCCSearch.Rows[0]["Adress"].ToString();
        txtCity.Text = l_dtCCSearch.Rows[0]["City"].ToString();
        txtCompanyName.Text = l_dtCCSearch.Rows[0]["CompanyName"].ToString();
        txtContactName.Text = l_dtCCSearch.Rows[0]["ContactName"].ToString();
        txtCountry.Text = l_dtCCSearch.Rows[0]["Country"].ToString();
        txtEmail.Text = l_dtCCSearch.Rows[0]["Email"].ToString();
        txtFax.Text = l_dtCCSearch.Rows[0]["FaxNumber"].ToString();
        txtPhone.Text = l_dtCCSearch.Rows[0]["PhoneNumber"].ToString();
        txtPostalCode.Text = l_dtCCSearch.Rows[0]["PostalCode"].ToString();
        txtProvince.Text = l_dtCCSearch.Rows[0]["Province"].ToString();
        txtTaxCode.Text = l_dtCCSearch.Rows[0]["TaxCode"].ToString();
        rtxtNotes.Text = l_dtCCSearch.Rows[0]["Notes"].ToString();

    }
    catch (IndexOutOfRangeException)
    {
        DialogResult result;
        result = MessageBox.Show("Aucune entrée correspondante à votre requête n'a été trouvée.", "Erreur");
        if (result == DialogResult.OK)
        {
            this.ShowCurrentRecord();
        }
    }

}

using System;
using System.Collections.Generic;

namespace Stock
{
	public struct StockShare
	{
		string Name;
		long Value;
	}
	
	public class StockMarket
	{
		public static void Main(string[] args)
		{
			//TODO: Get the list of stocks and shares from somewhere
			List<stockshare> stocks = new List<stockshare>();
			Random rnd = new Random();

			while (true)
			{
				foreach(StockShare stock in stocks)
				{
					int crashBy = rnd.Next(100, 5000);

					if(stock.Value >= crashBy)
					{
						Console.WriteLine("Old value of " + stock.Name + ": " + stock.Value.ToString());
						stock.Value -= rnd.Next(100, 5000);
						Console.WriteLine("New value of " + stock.Name + ": " + stock.Value.ToString());
					}
					else
					{
						BailOut(stock);
						Console.WriteLine(stock.Name + " has been bailed out. Expect further corruption");
					}
				}
			}
		}

		public static void Bailout(StockShare stock)
		{
			stock.Value += 1000000;
		}
	}
}</stockshare></stockshare>